When I adopted out my clutch from last year( didn't sell them since they were not a planned event ). I had a post on craigslist that I had soem eggs that htch and would soon be ready. I didn't send any ofthem out until they had a minium of 3 meals and crapped at least once. I had a guy that wanted the one I end up keeping ( since she was a refusing to eat) I told him that she was not ready to go do to the fact she refusign to eat..

I end up keeping her, after i forced fed her 2-3 time she started on her own and beeing doing great ever since. I think I was stessing out more than the snake did the entire time.
once she got the meal past the back of her outh she did the rest but trying ot get rat pinkies into her was a royal nightmare. and I don't want to gothough that again if I can prevent it!

BUt I agree a minium number of feeds should be a set rul/ requirement. I know the 3 snakes I got at the show last year had eaten at least 2 times.